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Phase Academy
ALL PATHSPATH · 01

Electrical Foundations

Eight short modules that build the base model of an electrical system: what voltage, current, and impedance do; how AC quantities are described; why three-phase exists; how real, reactive, and apparent power differ; what a transformer changes; how a one-line encodes a system; what grounding and bonding are for; and how conductors are sized for heat and drop.

LEVEL
Beginner
TOTAL TIME
3 h 40 min · 8 modules
AUDIENCE
Student, Technician, Engineer
VERSION
v2.0 · Published
YOUR PROGRESS0 / 8 · 0%

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Module timeline

  1. Voltage, current, resistance, and Ohm's law

    Concept 20 min

    Predict how current changes when voltage or resistance changes, and read a simple series circuit.

    Completes on: prediction recorded, knowledge check submitted, reflection confirmed
    Open module

  2. AC waveform, RMS, frequency, and phase

    Concept 25 min

    Read an AC waveform in terms of peak and RMS magnitude, frequency, and phase angle between two waveforms.

    Lab: Harmonics & Waveform Distortion LabCompletes on: prediction recorded, lab opened, guided scenario steps confirmed, knowledge check submitted, reflection confirmed
    Open module

  3. Single-phase versus three-phase

    Concept 25 min

    Explain why three-phase systems are used and convert between line and phase quantities in wye and delta.

    Completes on: prediction recorded, knowledge check submitted, reflection confirmed
    Open module

  4. Real, reactive, and apparent power and power factor

    Guided scenario 30 min

    Separate kW, kvar, and kVA, and explain what correcting power factor does and does not change.

    Lab: Power Factor Correction SimulatorCompletes on: prediction recorded, lab opened, guided scenario steps confirmed, knowledge check submitted, reflection confirmed
    Open module

  5. Transformer fundamentals

    Guided scenario 30 min

    Describe what a transformer changes — voltage, current, impedance reference — and what it conserves.

    Lab: Power Transformer SimulatorCompletes on: prediction recorded, lab opened, guided scenario steps confirmed, knowledge check submitted, reflection confirmed
    Open module

  6. One-line diagram fundamentals

    Guided scenario 25 min

    Read a one-line diagram: name each element, trace a fault path, and identify what the drawing deliberately omits.

    Lab: One-Line Diagram Builder & ExplorerCompletes on: lab opened, guided scenario steps confirmed, knowledge check submitted, reflection confirmed
    Open module

  7. Grounding and bonding fundamentals

    Guided scenario 30 min

    State the distinct jobs of grounding and bonding and identify the fault-current return path in a system.

    Lab: Grounding & Bonding System VisualizerCompletes on: prediction recorded, lab opened, guided scenario steps confirmed, knowledge check submitted, reflection confirmed
    Open module

  8. Voltage drop and ampacity

    Guided scenario 35 min

    Size a conductor against both heating and voltage drop, and state which constraint governs and why.

    Lab: Voltage Drop Calculator & ExplorerCompletes on: prediction recorded, lab opened, guided scenario steps confirmed, knowledge check submitted, reflection confirmed
    Open module

What you will be able to do

  • Relate voltage, current, and resistance and predict which way a quantity moves when another changes
  • Read an AC waveform in terms of peak, RMS, frequency, and phase angle
  • Explain why three-phase distribution is used and how line and phase quantities relate
  • Separate real, reactive, and apparent power and interpret power factor
  • Describe what a transformer changes and what it does not
  • Read a simple one-line diagram and name each element
  • State the distinct jobs of grounding and bonding
  • Size a conductor for both ampacity and voltage drop, and say which one governs

Prerequisites

  • Comfort with basic algebra
  • No prior power systems coursework required

What counts as complete

All eight modules marked complete. A module only unlocks its complete action after the learner records a prediction where asked, opens the linked lab where one exists, submits the knowledge check, and confirms the reflection prompt.

Opening a lab never marks a module complete on its own.

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